Re: TM500/TM5000 extender project
Ke-Fong Lin
Hi everyone,
The PCB is ready! I've updated the preview and the schematics. https://drive.google.com/file/d/14WSoPeQoIwup4532_YnxUz44PVxAYJ8T/view https://drive.google.com/file/d/1E7RxXXPg_3-Kwd652mFbe5g-4zoBeAN_/view In particular, I've added a small circuitry to generate the "power good signal" for the TM5000 modules. It's basically a voltage divider from 8V to 5V, and an NPN buffer. The PWR specifies a full load (16mA) of TTL high (+5V). A small drawback is that it always draws around 2-3mA even if not to needed (inserted in a mainframe). Can some of you do a review of the schematic? Or give some comments or suggestions? For those really curious, I can send the complete kicad project, just ask. Final version will be an github of course. For a pure extender use, there is just some wiring to be done. Otherwise, I'll have to provide some sort of BOM. I also have to write a small "documentation". Plan is to send the PCB to fabrication (JLPCB) this week-end, after feedbacks. Best regards,
|
|